O99

Non-billable

Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

Chapter 15: Pregnancy, childbirth and the puerperium

Coding Guidance

O99 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail. See Related Codes to drill down to more specific billable codes for appropriate reimbursement.

Additional Information

From parent codes: O00-O9A (Chapter 15)

Excludes 1 — Not Coded HereFrom O00-O9A

Excludes1 means 'NOT CODED HERE!' An Excludes1 note indicates mutually exclusive codes: two conditions that cannot be reported together.

supervision of normal pregnancy (Z34.-)

Excludes 2 — Not Included HereFrom O00-O9A

Excludes2 means 'NOT INCLUDED HERE!' An Excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time.

mental and behavioral disorders associated with the puerperium (F53.-)
obstetrical tetanus (A34)
postpartum necrosis of pituitary gland (E23.0)
puerperal osteomalacia (M83.0)

Use Additional CodeFrom O00-O9A

The 'use additional code' note instructs that a secondary code should be added to provide more detail.

code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

NotesFrom O00-O9A

Additional notes from parent codes that apply to this code.

CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
1st trimester- less than 14 weeks 0 days
2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
3rd trimester- 28 weeks 0 days until delivery